Dental floss holder



FIG. 1 is a top plan view of a first embodiment of my design; the bottom plan view is the mirror image thereof;

FIG. 2 is a left end elevation view of the design of FIG. 1; the right end elevation view is the same;

FIG. 3 is a front elevation of the design of FIG. 1; the rear elevation is the same;

FIG. 4 is a top plan view of a second embodiment of my design; the bottom plan view is the mirror image thereof;

FIG. 5 is a left end elevation view of the design of FIG. 4; the right end elevation view is the same;

FIG. 6 is a front elevation of the design of FIG. 4; the rear elevation view is the same. 

The ornamental design for a dental floss holder, as shown and described. 